FAQs: Regarding Sauna Maintenance
Below find a list of many sauna FAQs we’ve answered through the years
Popular Search Keywords:
- How to renew old sauna natural wood color?
Renew old sauna | The ONLY sauna maintenance product available that can actually renew an older sauna
Designed to:
- Protect against the discoloration of the wood used in most saunas
- Revitalize your Old Sauna with our Essential Sauna Wood Oil
- Covering up existing water stains
- Restore sauna wood to a natural look

Sauna wood oil bottled by Cedarbrook Saunas + Steam Essential Sauna Wood Oil is a combination of non-toxic aromatic oil treatments for the interior of all wood saunas.
- Completely non-toxic; active ingredient is tea tree oil. Tea tree oil has antimicrobial properties that help eliminate the toxins expelled from the body during sauna bathing
- Designed to protect against the discoloration of the wood used in most sauna units
- Covers over 700 to 1000 sq. ft. per gallon
- FDA-approved food grade petroleum oil base, which when applied correctly does not absorb into cloth
- The sauna environment bakes the wood and dries out the natural oils, this product is designed to replace them
See Essential Sauna Wood Oil Application Instructions in the “Description” tab
- How to clean your sauna?
How to Clean Your Sauna
QUICK TIP: Use towels while inside your sauna and wipe the benches after your sauna session. Also avoid hard water when making steam, distilled water is best
Steam Kleena / Steam Cleaner After sweeping or vacuuming for dust, dirt and hair. We wipe down our sauna walls and benches with a product called, Sauna Kleena made of biodegradable products, natural oils and other ingredients specifically designed for sauna wood cleaning. An important ingredient is tea tree oil which has many antiviral, antibacterial, antifungal, and antiseptic qualities. There is no bleach or ammonia in the product. Sauna Kleena also kills germs, viruses, mildew, and fungus on wood.
You can dilute it 5 to 1 or use directly from the bottle for stubborn stains or odors. Sauna Kleena will gently clean the wood without drying it out. This keeps your sauna looking new and avoids the splintering and cracking that can occur with other cleaning products. If the sauna wood has deep water and sweat stains, try sanding the wood with a fine 150-180 grit sand paper. The light sanding will usually remove some of the worst stains. Then wipe off the dust and clean with the sauna cleaner. See our favorite sauna cleaner product and our sauna wood treatments.
- How to protect sauna from sweat stains?

Sauna Wood Treatment / Miracle Cover Marine – 1 Gallon Yes, we recommend Miracle Cover – It’s an all natural water-based, food-grade wood sealer that’s awesome for sealing your sauna wood
Protect sauna from sweat stains | A non-toxic sauna interior wood sealer!
Restaurants even use this wood sealer to promote hygiene and longevity on their wood counters. Miracle Cover is an highly advanced water-based silicon emulsion solution. Non-toxic and long lasting. Works great for sealing sauna rooms. Prevents water and sweat from staining your sauna wood.
Sauna Uses and Benefits
The world’s greatest water-based silicon sealer used for waterproofing, water resisting and anti-graffiti protection
- Can be used on a myriad of materials: wood, concrete, stucco, brick, tile/grout and on and on
- It is non-toxic and will not harm you or the environment
- One coat resists liquid penetration and UV rays for up to 20 years.
- It allows the substrate to breathe, is flexible and will not discolor or fade
- Resists salts, acids, harsh chemicals and oils
- Can be used as a top coats for all paints or stains when mixed in or after sufficient porosity has developed after 6-12 months of UV exposure
Use Miracle Cover instead of other coatings as it lasts much longer and is far more durable.
- How to preserve the sauna exterior?
The elements are hard on outdoor structures

4×6′ Outdoor Sauna + Sloped Roof + Sun Frog Stain Bare wood does not fair well in the sun, wind, rain and time
- Saunas placed outdoors will patina gray in the sun
- Rain water does make wood swell and contract when drying
- Mold can grow typically where rain hits the base of the walls
- Climate conditions means lots sun and heat, then rain water, then snow and cold and of course, time
Sun Frog preserves wood color and protects it from dirt and mold
Preserve your sauna from the elements using Sun Frog SAUNA SEALER — a premium blend of non-drying, drying and co-polymer oils, ultraviolet blockers, mildew resisting agents and penetration assisting thinning solvents, that produces a high quality wood sealer providing long lasting beauty.
- How to clean sauna rocks?
Cleaning your sauna heater and rocks

Vulcanite Sauna Rocks Follow these steps when cleaning your sauna heater and rocks:
- Your sauna rocks need cleaning from time to time. Of course, wait until they are cool before soaking them in warm, soapy water. Use a mild brush to clean them off and then rinse them with clean in water. Make sure the rocks are completely dry before you place them back in the sauna heater appliance housing.
- While your rocks are soaking, clean out the heater trough of any foreign materials. If any of your rocks have broken, do not put them back in the appliance housing. The grit they leave behind can damage the stainless steel.
QUICK TIP: When making steam on your sauna rocks, it’s best to use distilled water OR especially best NOT to use hard water from a well. Hard water will discolor your sauna walls over time.
NOTE: Rocks should be packed loosely. If your sauna heater cuts out after repacking, the heater may not be getting adequate airflow allowing a safety limit sensor to go off. Try repacking the rocks more loosely, covering the tops of the elements with only one layer of rocks. Watch our related video for the portion regarding packing your sauna heater rocks: How to Build a Sauna: Adding Rocks to the Sauna Heater video.
And enjoy your next sauna!